D. start with a 5 ml syringe and 22 gague need as a seeker needle.

首先使用5毫升注射器和22号针头做引导穿刺针。

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Vitamin D inadequacy was defined as <32 ng/mL, vitamin D insufficiency was defined as 20 to <32 ng/mL, and vitamin D deficiency was defined at <20 ng/mL.

维生素D含量在32ng/mL左右为维生素D缺陷（inadequacy），20—32ng/mL为维生素D不足（insufficiency），低于20ng/mL为维生素D缺乏（deficiency）。

youdao

Vitamin D inadequacy was defined as <32 ng/mL, vitamin D insufficiency was defined as 20 to <32 ng/mL, and vitamin D deficiency was defined at <20 ng/mL.

维生素D含量在32ng/mL左右为维生素D缺陷（inadequacy），20—32ng/mL为维生素D不足（insufficiency），低于20ng/mL为维生素D缺乏（deficiency）。

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